you could only expose a webhook which is deployed public and then forward the locations from the webhook to the dawarich instance via wireguard or just use a vpn also on the client

🙋

I use it to track travel times for work and sometimes create maps of trips. Also I personally just like to see oh I was there a few days/weeks/years ago which brings up memories

Owntracks can do that but it has a limit of how much locations can be stored locally. I think it was 100k, so depending on your tracking interval during the month you may hit the limit. Also it still tries to sync every few minutes even though the server is down. Colota (https://github.com/dietrichmax/colota) supports the same without a limit and you can use it in a offline mode and then export e.g. a geojson and import it into Dawarich or you set it to only sync it on a imaginary SSID like "abc " and then change it to the correct one when you actually want to sync. So it never even tries to sync until you really want it to. Disclosure: I’m the dev of Colota.